Annual herb, 15-30 cm tall. Stems slender, tufted, erect or procumbent, much branched, and strigose upward. The leaves are elliptic or narrowly elliptic, with a length of1-2.5cm and a width of 0.5- 1 cm. The apex is blunt, the tip is small, the base is wide and wedge-shaped, and the upper and lower surfaces are coarse or short bristles. Inflorescence weak, slender, long 10-20 cm; Bracts elliptic or narrowly ovate, 0.5- 1 cm long and 3-8 mm wide, covered or setose; The pedicel is short, 1-2 mm long, and the fruit period does not increase or slightly increases; Calyx length 1- 1.5 mm, swollen in fruit, about 3 mm long. The outer surface is densely covered with upward hairs, and the inner surface is hairless or scattered above the middle. Lobes lanceolate or ovate-lanceolate, splitting to near base. Corolla blue or light blue, length 1.5- 1.8 mm, base diameter 1 mm, eaves diameter 2.5-3 mm, lobes round, length and width about 1 mm, throat with five trapezoidal appendages, about 0.2 mm high; Style cylindrical, extremely short, about 0.5 mm long, about 1/3 or smaller than calyx. Nutlets are kidney-shaped, with a length of 1- 1.2 mm and a rectangular annular depression on the ventral surface. Flowering and fruiting period: February-65438+1October. [ 1]